tijl.dev-core/internal/i18n/i18n.go

package i18n

import (
	"encoding/json"
	"path/filepath"
	"strings"

	"git.tijl.dev/tijl/tijl.dev-core/locales"
	log "git.tijl.dev/tijl/tijl.dev-core/modules/logger"
	"github.com/gofiber/fiber/v2"
)

var translations map[string]map[string]string

const DefaultLang = "en"

func Load() {
	translations = make(map[string]map[string]string)

	files, err := locales.Embed.ReadDir(".")
	if err != nil {
		log.Fatal().Err(err)
	}

	for _, file := range files {
		if file.IsDir() {
			continue
		}

		if filepath.Ext(file.Name()) != ".json" {
			continue
		}

		lang := strings.TrimSuffix(file.Name(), filepath.Ext(file.Name()))

		data, err := locales.Embed.ReadFile(filepath.Join(".", file.Name()))
		if err != nil {
			log.Error().Err(err).Msg("Failed to read file")
			continue
		}

		var messages map[string]string
		if err := json.Unmarshal(data, &messages); err != nil {
			log.Error().Err(err).Msg("Failed to decode JSON")
			continue
		}

		log.Debug().Str("filename", file.Name()).Msg("i18n.Load: loaded")
		translations[lang] = messages
	}

	log.Info().Msg("loaded translations")
}

func Translate(c *fiber.Ctx, key string) string {
	lang := c.Cookies("language")
	if messages, ok := translations[lang]; ok {
		if message, ok := messages[key]; ok {
			return message
		}
	}
	if messages, ok := translations[DefaultLang]; ok {
		if message, ok := messages[key]; ok {
			return message
		}
	}
	return key
}

func GetLanguage(c *fiber.Ctx) string {
	lang := c.Cookies("language")

	if _, ok := translations[lang]; ok {
		return lang
	} else {
		return DefaultLang
	}
}

func GetTranslations(lang string) map[string]string {
	if messages, ok := translations[lang]; ok {
		return messages
	}

	return translations[DefaultLang]
}